Multi-language SVG documents are possible
by utilizing the ‘systemLanguage’ attribute to have different
text strings appear based on the client machine's language setting.

I.3 SVG Internationalization Guidelines

SVG generators should follow W3C guidelines for normalizing character
data [CHARMOD]. When precise
control over glyph selection is required, use the facilities for
Alternate glyphs to override the
user agent's character-to-glyph mapping algorithms.